A LEGO Turing Machine?

Science geeks are at it again. They’ve built the Antikythera Mechanism and Charles Babbage’s Difference Engine out of LEGOs. Now to celebrate Alan Turing’s birthday they’ve constructed a functioning Turing Machine:

Davy Landman and Jeroen van den Bos constructed a Turing Machine out of LEGOs.

The video at the original post shows the machine blazing through the difficult mathematical problem: 2+2.

What will these science geeks build next, a functioning astrolabe? Maybe an Armillary Sphere? Or maybe Mechanical Turk?